Sphere Research Coporation  UPDATED July 17, 2023 
Sphere Research Coporation
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Sphere Research Coporation, CLICK to visit!Sphere Research Corporation
3394 Sunnyside Rd.
West Kelowna, BC, Canada V1Z 2V4
Phone: +1 (250) 769-1834

A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES!

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CLICKUseful off-site Links I use regularly.
All Prices in US Dollars (US$) due to unavoidable purchasing in US funds.

Over 1.3 Million
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CLICKGo to the HOT Deals!
Hot Deals
CLICKScopes CLICKMeters CLICKPower Supplies CLICKCounters
Manufacturer General Information
CLICK to see TEKTRONIX Equipment
CLICK to see TEKTRONIX Equipment
Used Tektronix


Go to the Tek EquipmentTek to Industry Cross-Ref Data

Go to the Tek CRT DataTek 154 CRT Data

Go to the Tek CRT DataSpare Parts Index + 119-Series Attenuators

Go to the Service Info!Tek Service Info
*We have 400 and 2000 series Scopes, 5K, 7K, 11K modules, TM500, TM5000 Modular Equipment. PLUS: MANY NEW AND USED/TESTED Tektronix Spare Parts HERE. Parts are being constantly updated with new items! Also check the parts stock (below) as well for more cross-ref data! We have also just added a Service Page, with all kinds of links and tips for servicing your Tek scopes.

Tek Parts in Stock (by Tek p/n) CLICK to see:
119  Fans 119  LCDs 120  Transformers & Inductors
147  Fans 148  Relays 150  Lamps & LEDs
151  Transistors 152  Diodes 153  Selected Semis
155  165  234  Custom ICs 156  Standard ICs
159  Fuses 160  Programmed ICs 260  Switches
281  285  290  Capacitors 307  311  Pots & Resistor Networks 331  366
376  384
 Knobs  Couplers
200  334
337  367  378
 Trim,  CRT Filters &  Case Parts
348  Tek Feet & New Replacements
Hewlett Packard
CLICK to see Hewlett-Packard EquipmentCLICK to see Hewlett-Packard Equipment
Used HP


Go to the HP EquipmentUsed Equipment

Go to the HP Cross-reference DataHP to Industry Number Cross-Ref Data

Go to the HP CRT DataSpare CRTs & LEDs

Go to the HP PartsHP Spare Parts

Go to the Service Info!HP Service Info

*Oscilloscopes, Oscillators, Attenuators, Generators, Microwave Amplifiers, Meters, RF Power Meters and GPIB/IEEE488 cables and extenders. We also have new and salvaged Spare Parts.
We now have a new cross-reference section with HP Nixie Tubes and Panaplex Displays (at the bottom of the page). This allows you to find the industry standard part number for house marked HP displays. Great for 'out of support' equipment! We also have Spare HP CRTs and LEDs and model reference data located here.
HP Parts in Stock (by HP p/n) CLICK to see:
181X  1NB  1KB  508X-  Integrated Circuits 182X  Integrated Circuits 185X  Transistors  FETs
19XX  Diodes  LEDs  Rectifiers 0490  2140  91XX  Relays  Lamps  Transformers  Passive Parts
  5082  HP LEDs
Fluke / Philips
CLICK to see FLUKE Equipment
Used Fluke/Philips Eqpt.



Go to the Fluke EquipmentUsed Equipment

Go to the Fluke PartsFluke Spare Parts

Go to the Fluke/Philips CRT DataSpare CRTs & Data
*Meters, Calibrators, Scopes, Reference Standards, and Fluke Spare Parts. Both classic and modern Fluke items, plus equipment from the Fluke/Phillips era. Fluke makes some of the best DMMs ever, we have a good inventory of constantly changing, fully calibrated selections. We now also have some highly requested Fluke LCD DMM displays in stock for spares!
We also have the very popular Philips Scopes, both the razor sharp analog scopes, and the very popular digital/analog Combi-Scopes.

General Radio
CLICK to see GENRAD Equipment
CLICK to see GENRAD Equipment
Used General Radio
(Genrad) Equipment

*General Radio / GenRad Reference Standards, Generators, Dividers, Wattmeters, Attenuators.
Just arrived, more 1840A Power Meters! Fully overhauled and cal'd.

The classic equipment from GenRad remains a first choice by many for passive standards, power measurement, bridges and component measurement. The company is now gone (some items survive at IET), but you can still get some of their unique and incredibly well-built equipment here!

CLICK to see RF/Function Generators

* RF and Function Generators of all kinds (not from HP/GR or others above), including sweeping generators. We have equipment from Wavetek/PMI, and many others.

CLICK to see Microwave/RF Equipment
Equipment & Accessories

* RF Voltmeters, Directional Couplers, precision 50 Ohm RF dummy loads and attenuators plus coax accessories. Items to 18Ghz, plus you can E-mail your RF specific requests, as we have MANY MORE RF items not on the site.
Narda, RLC, ARRA, Bird, Inmet, Weinschel, Alan, Wavetek/PMI

Power Meters

RF Powermeters, CLICK to SEE!

* RF power meters, RF Millivoltmeters and Microwattmeters, both digital and analog. Items to 26.5Ghz. Makers like Boonton, Wavetek/PMI, HP and others. Popular power measuring systems like the Boonton 42 and 92 Families, PMI/Wavetek 1045, HP 436A and HP 432A are in this section.
Used with sweep generators, directional couplers and attenuators, these instruments can measure power, loss, return loss, frequency response, and other S-parameters. Systems like the 436A and 1045 have many automation features to speed up complex network measurements and correct for system offsets and losses. When these systems drive a CRT display instead of a meter, and track frequency vs. power, they are called Scalar Analyzers.
PMI/Wavetek  -  Boonton  -  HP

Scalar Analyzers
Analyzers, CLICK to SEE!

* RF Scalar Analyzers, both digital and analog. Items to 26.5Ghz. Makers like Wavetek/PMI, HP and others. Popular analyzers including the PMI/Wavetek 1038-D14/A Series, plus accessories, plug-ins and other systems.
Used with sweep generators (like the HP 8620C, Weinschel 430 series or Wiltron 610D), directional couplers and attenuators, these instruments can measure and display power, gain, loss, return loss, frequency response, and other S-parameters over the frequency range of the sweeper. Can also be used to graphically display RF power at any node.
PMI/Wavetek  -  HP


CLICK to go to the Power Supplies

*Power Supplies of all kinds, modular, lab bench supplies and heavy duty rack types. Makers like Xantrex/Sorensen, HP, Lambda, Kepco, Beckman Industrial, Isoreg, Power One, Vicor and others. Please note, small Wall Wart power supplies have their own section below!
Lambda  -  Kepco  -  HP

Wall Warts
Line Cords

CLICK to go to the Wall Warts and Line Cords
External Power Supplies

*External Power Supplies of all kinds, from the lowly unregulated wallwarts, to advanced world-power universal switchers with popular values like 5VDC, 9VDC, 12VDC, 24VDC and others, plus all kinds of AC Line Cords and mating IEC connectors, including IEC 320 C5, C7, C13 and C14 types, and the special old stype HP (Freiden) type power cords.
POTRANS, Tiger, Delta, OEM, Volex, I-Sheng, Schurter

Supply Parts

CLICK to go to the Power Supply Parts

*Power Supply Service and Construction Parts, A wide cross-section of all power supply parts from Electrolytic Capacitors, Rectifiers and Bridges to IC Regulators. Great mixture of parts you will need to fix almost any power supply. All premium high quality parts, no junk here.
Philips, Murata, CDE, National Semiconductor, United Chemi-con, Nichicon, Motorola, GI, Rubycon
CLICK for Microscopes and Optics

*Stereo Microscopes and Lenses, Fiber and optical test equipment. Lasers to theodolites, as we sometimes wind up with these items as part of a project or large lot purchase. Microscopes, lenses, lasers, mirrors, and unusual fiber-optic hardware and cables, items vary randomly with time. Olympus Microscope lenses, stages and accessories. Great gear for SMD assembly and inspection, much more coming soon!
Makers like Olympus, Zeiss, Celestron, Scienscope, Corning, Leica and many others.

High Voltage

CLICK to see HV items!

*High Voltage Components and Power Supplies, everything rated 600VDC volts and higher, from capacitors and high voltage rectifiers to HV bench supplies. Also have HV multipliers and flybacks. More items will be added continuously, so check back to see what's new.
TRW, ASC, Varo, CDE, Motorola, Kepco, WIMA, Bertran
Go to the CRT's
Standard CRTs
*Small Cathode Ray Tubes (CRTs) of all kinds, for spares, clocks and experiments. We typically have a small quantity of common miniature 1 inch tubes up to 7 inch diameter electrostatic tubes. Extensive illustrated CRT reference data now added on line. We no longer stock HP or Tek CRTs, but do have reference data here for them.
Go to the Standard CRTs, NumericStandard Stock CRTs (2BP1, 3RP1A, etc.) Go to the Standard CRTs, AlphabeticStandard Stock CRTs (DG7-32, etc.)
Go to the HP CRTsHP CRT Info Go to the Tektronix CRTsTektronix CRT Info
Go to the CRT/PMT Reference DataGeneral CRT/PMT Reference Data
CLICK to see PMT/Phototubes
PMTs Photomultipliers Phototubes & Photodiodes
*We now have only a small selection of common PMTs and Photodiodes photodetector & photomultipliers in stock. Also detailed PMT, Phototube data on line!

Photoconductive cells and photodiodes are also listed. Some specialized PMT sockets and power supplies are also now shown on this page for convenience.

Go to the PMTs and PhototubesPMT & Phototube Datasheets

AC Line Filters
AC Line filters, CLICK to see!

*We have a wide assortment of AC line entry filters, with CSA/UL approvals for main power entry and conditioning. Some units also have fuse holders and power switches, others are IEC line entry only.
Delta Electronics, Schaffner and others

12VDC Fans
FANS, CLICK to see!

Fans5VDC Fans

24VDC & 48VDC Fans

FansAll AC Fans
*We have thousands of fans and blowers for equipment overhaul, both AC and DC types in all sizes. Some very nice and hard to find units here, more constantly being added every week. Now split into 4 pages, AC (110/220V) and 5, 12 and 24/48 DC fans, for easier and faster searching. Fans are sorted in order by voltage/size and maker to make quick substitution easier.
Comair/Rotron, ADDA, Sunon, TRW, Delta Electronics, NIDEC, Mechatronics, Fonsan, Superred, Interfan, Panasonic, Unicom, Sanyo Denki, Agilent, PSC, Howard, PAPST, AVC, Y. S. Tech, NMB

CLICK to see the Meggers
CLICK to see the Meggers
Insulation Testers

* High Voltage/Dielectric Strength test sets of all kinds, for both leakage and resistance measurements. AC and DC types. Meggers, CSA compliance Test Sets and all related items.
Biddle, Associated Research, Inc. (AR), Criterion Instruments, Amprobe, CRI/Canadian Research Institute, Rod-L, General Radio

CLICK to see Loads!
CLICK to see Loads!
Power Resistors, Rheostats & Loads

* All kinds of precision power loads, including power resistors, rheostats, and electronic/dynamic loads.

Great for power supply, amplifier and other load testing. Always rapidly changing inventory, so check often! PLUS, we now have BIDDLE Lubri-tact adjustable loads, many values available, all fully overhauled and ready for use.

Ohmite, IRC, Biddle, Caddock, Arcol, Cal-R, ACDC Electronics, Vishay/Dale, Clarostat

CLICK to see the robotics stuff!
Motors, Drivers, etc.

* Here's our stash of amazing electromechanical items, including DC gearmotors, steppers, specialized motor driver and high power amp ICs and even a few classic Robby the Robot items sometimes, just for fun. All kinds of automation and robotic items for your viewing and constructing pleasure.
Merkle-Korff, Pittman, Toshiba, VBM

CLICK to visit Precision References
Precision References & Standards

* All kinds of precision standards for calibration, from voltage and frequency to resistance and capacitance, all fully overhauled and ready for use. Also low cost precision passive components to use as secondary shop standards. Note: General Radio standards are still in the General Radio section, not there.
EDC, Vectron, Leeds and Northrup, PRC, ESI, Vishay


CLICK to see the manuals in stock

*New and reprinted equipment service manuals. We got so many requests, we started ordering in some extras for customers, and now have a good selection to choose from.
Tektronix, HP, Fluke, PMI/Wavetek, Philips

CLICK to visit TOOLS!
Production Tools & Supplies

* A new section with all kinds of electronic assembly hand tools, connector tools, scalpels, special drills, and other electronic production tools and aids of all types. Many exotic aerospace items, and hard to find tools that change constantly. Also production supplies like heat sink grease, lacing tape, and wire as we have it. More will be added regularly, so check back periodically. Both new and used items as we find them.
Xuron, DMC, UVEX, Electrix, Dow, Petsche

CLICK for Databooks and Textbooks
Databooks, Textbooks & Catalogs

* Important electronic component databooks and industry textbooks of all kinds, which are disappearing in printed form. Everything from GE's classic Transistor manual to PAL and microprocessor books, tons of Motorola classic databooks, Texas Instruments (TI) databook sets, almost impossible to find!.
Just added, Tektronix, HP, Fluke and other equipment CATALOGS! Great reference material for identifying instruments and finding specs.

Test Leads and Cables
CLICK to see the Test Cables

*Test leads and coax cables for all kinds of test equipment applications. Constantly varying assortment, have a look. Replacement leads for your DMM and much more. Line cords, Scope Probes, Computer and Ethernet Cables.
*Some very useful company history and general information about our new and used test equipment. Check the FAQ for general privacy info, shipping, and other useful information about us.
You can E-mail an order to us OrderHERE.
Call us! Or call +1 (250) 769-1834

There is no minimum order here, BUT, there is a minimum shipping/handling charge to ship by Expresspost (airmail insured) or small packet. You can see all charges in the FAQ section. Please do not ask to ship uninsured as it merely tempts fate in an unwanted way.
Parts by the Foot!
See Parts by the foot!
Parts by the Foot, CLICK to see!
CLICK to see!
Prime Electronic Parts by the Foot!
Parts By the Foot
Transistors, LEDs, Rectifiers, Capacitors, Chokes and Diodes, as little as 8 cents each!
Great deals on popular service and experimenter's parts, now you can buy them the way large manufacturers do, in bulk tape and reel, at rock bottom prices. These parts are sold by the foot. Yes, we are metric in Canada, but this is really the appropriate size for most people, and 30.48 cm just doesn't have the same marketing ring to it!
0.5kg of Goodness
CLICK to see what's INSIDE!
CLICK to look INSIDE the Bag!
Wahoo, Electronic Grab bags are BACK!
We keep accumulating miscellaneous parts that are extras, come with bigger lots, and are being purged from our stock. At the same time, many people grumble about paying the minimum shipping charge when they ship something small. Well, we have the technology to solve this problem. We will add a 0.5kg (roughly 1 Pound) grab bag of new parts (mainly, there might be the odd pulled or used but useful item) to fill up the extra weight in your shipment! Some of the material is pretty spectacular, you will certainly get good value for your money. They include resistors, capacitors, ICs, chokes, semiconductors, switches, assemblies, and all kinds of mystery items, NO TWO BAGS ARE ALIKE. We have four categories, electronic parts, mechanical/hardware, vacuum tubes (will be some used types in every bag), and connectors/cables. Any type, US$15.
CHECK OUT OUR HOT DEALS SECTION Go to the HOT Deals!Go to the HOT Deals!Go to the HOT Deals! FOR BARGAINS
Got questions, comments, need information, or want something?E-mail us
Tubes, Semiconductors and Parts of All Kinds
Parts General Information
CLICK to see Nixies!
CLICK to go to the Nixie Tubes
Nixies & Numitrons
*Burroughs, National, Amperex and Philips NIXIE TUBES, SOCKETS, Tung Sol DIGIVAC VFD Tubes, British Dekatrons, RCA NUMITRONS, Beckman, Sperry, Babcock Panaplex displays and all kinds of FIP and LCD displays, now all split into different pages for faster loading! Hundreds of displays in stock of all kinds. New NIXIE DATA page with extensive original factory data, pinouts and operating information.
Go to the Nixie StockNixies Go to the Numitron StockNumitrons Dekatrons
Go to the Numitron StockLCDs Panaplex VFD Go to the Nixie Reference DataReference Data
CLICK to see!
Tube Circuit Parts
*We have a nice assortment of higher voltage film caps and electrolytics, plus other tube circuit related parts. Getting very tough to find, these are all premium parts, perfect for Tube or Guitar amp repairs or construction.
Go to the Tube/Transistor/IC sockets
Tube Transistor Nixie & IC Sockets
*Cinch, Eby, Augat, RN, Cambion and others, all kinds of Tube, Transistor, Nixie Tube and IC sockets, including hard to find test sockets for circular and flat pack ICs. Also large 5 pin power tube sockets, nixie tube and nuvistor sockets, and many others! Just added, Terminal Blocks and Terminal Strips!
CLICK to see the LEDs and Lamps
LEDs & Lamps
*We have a wide variety of LEDs (both CBI-circuit board indicator and loose types), LED displays, Incandescent Lamps, Lamp Holders and Indicators. We have very large quantities of some items. Includes parts by Dialight (Dialco), Lumileds, Oshino, GE, Sylvania, Philips, Temic, HP and many others.
CLICK to see the RF semis
Transistors & ICs

Go to the Rf DiodesRF Diodes
*A huge range of RF power and signal transistors and ICs, MRA, SRF, and other power transistor series, plus parts to several GHz. Includes hard to find Motorola, TRW, Siliconix, Philips, Acrian, MSC, GHz Technology. Also RF diodes, modules, varactors, PIN diodes, Schottkys, varicaps and other related RF specialty parts.

go to 1N/2N/3N parts
1N 2N 3N & House Number Semiconductors

*All kinds of interesting military and industrial 1N/2N/3N JEDEC numbers, plus common house number series parts such as M, MDA, MR, MJ, MJE, MPS, TIP, etc. Transistors, FETs, SCRs, Diodes, Zeners, MOSFETs, Bridges and Rectifiers. We have thousands of new premium quality repair parts in stock for you to choose from.

2S/STK Consumer

*All kinds of interesting imported ICs and transistors for audio, video, switching, and STK audio amplifier and power supply modules. We have thousands of new premium quality repair parts in stock, including STK Hybrids, 2SA, 2SB, 2SC, 2SD and 2SK series discrete transistors.

CLICK to see Electronic Hardware
Electronic Hardware

NEW*Nuts, Screws, Strain Reliefs, Clamps and Heatsinks. Everything mechanical for the electronic world, many fascinating things, and always changing. Items from Aavid/Thermalloy, Philips, Heyco, C+K plus Many others.

CLICK to see Handles and Rack Adaptors
Handles & Adaptors

NEW*Aluminum and Steel handles for rack panels and assemblies, rack hardware mounting kits, plus HP/Agilent Rack Mounting Adaptors and Handle kits. Lots of variety, and new items added regularly. Items from RAF, Hammond, HP and Agilent.

CLICK to see the fuses and breakers
Fuses & Breakers

NEW*We have deep stock of many kinds of miniature fuses (including solderable types and automotive pluggable styles), as well as fuseholders and circuit breakers. More items will be added continuously as stock is photographed for listings. Includes parts by Wickmann, Littelfuse, Airpax, Carlingswitch and many others.

Inductive parts, CLICK to Visit!
Chokes Filters Beads & Transformers

*All kinds of inductive parts, from simple axial chokes to mil-spec toroids, audio and AC Power transformers. Also EMI filters, both Data and Line types, and all kinds of ferrite beads, including SMD types. Makers include UTC, TRW, Toko, TDK, Neosid, Schaffner, Rair Rite, Corcom, Pulse Engineering, Hammond, Triad, and many more.
Ferrite Beads!
Ferrite Beads & snap-on Ferrite Filters!

Connectors, CLICK to see!

*Under Construction
Extensive connector inventory with D-Sub, 0.1 inch pitch, RCA/Phono and miniature IDC connectors, Audio, Coax, XLR and MS-Circular connectors. Just starting to fill the pages, check back regularly to see what's added!

CLICK for filters, crystals, oscillators and capacitors
RF Parts Crystals Filters

*All kinds of crystals, oscillators, capacitors and filters and shields. Everything from Collins mechanical filters, tubular bandpass and SAW filters to HF HV caps. Fascinating RF bits and pieces of all kinds.

CLICK to see the meters

*All kinds of meters, component, panel and portable meters (mechanical) of every kind, watch for regular additions! Great for repairs and homebrew projects, plus some VOM style units.
Slide Rules
*We have new in the box and vintage restored slide rules from Pickett, K&E, POST, Faber Castell, Blundell and many more. Visit The Slide Rule Universe, full of reference info, archives and manuals for the fans of this wonderful tool.
Vintage EquipmentVintage EquipmentVintage Equipment
Vintage Test Equipment
*Everything from 1940's magazines and old classic semis to beautiful electronic test equipment from the era when cabinetry was just as important as internal design.
CLICK to see!
Links to Outside Manuals & Parts
*OTHER PLACES worth visiting that have test equipment manuals interconnect cables and spare parts available. Just updated with more good FREE test equipment manual sources.
Got questions, comments, need information, or want something?E-mail us

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Scope Calibration StationNeed Calibration Services?

Need high quality calibration service for Tektronix, HP/Agilent, Fluke and similar test gear? Visit our affiliate Avatar Metrology and get fast turn around at competitive prices on all popular items, plus full dimensional calibration capability.
Avatar is now our exclusive cal facility for all our test gear, an offers full NIST/NRC traceability. Drop by and visit them HERE to see if they can assist you.

Cease to do evil, learn to do good, purify your heart.
This is the teaching of all the Buddhas.
The Dhammapada, v. 183
It is hard to argue with that.

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